Vertically stacked trays overflowing liquid congealing into elec

Details Vertically stacked trays overflowing liquid congealing into elec Vertically stacked trays overflowing liquid congealing into elec

1995-01-25

1996-05-07

Tung, T.

Plastic and nonmetallic article shaping or treating: processes

Forming electrical articles by shaping electroconductive...

204466, 204620, 425117, G01N 2726

Patent

active

055142559

ABSTRACT:
Multiple, typically 5+, trays of an identical special configuration are vertically stacked one atop the next, end-to-end reversed. Each tray has an overflow feature, normally in the form of either (i) a portion of a side that is reduced in height so as to form a lip, (ii) a corner hole protected by a removable baffle of selectable height, or (iii) a threaded standpipe that may be screwed to variable height. The overflow feature permits that liquid will overflow each tray only upon reaching a predetermined height in a reservoir of the tray. A liquid poured in the top tray cascades downwards from tray to tray, filling each tray to a uniform even level and ultimately reaching the bottom tray of the stack. The liquid that is within each tray is permitted to gel, forming thereby a gel state material that is suitable to receive samples upon which electrophoresis may be conducted. Combination spacer and toothed comb elements are optionally inserted between the stacked trays. These spacer-comb elements serve to (i) space apart the stacked trays so that any untoward and undesired wicking of liquid onto the underside of the tray is especially precluded, and to simultaneously (ii) place arrayed small slits, or wells, in the gel--into which wells samples, upon which electrophoresis is ultimately conducted, are inserted.

REFERENCES:
patent: 4366941 (1983-01-01), Harris
patent: 4795541 (1989-01-01), Hurd et al.
patent: 4909977 (1990-03-01), Hurd et al.
patent: 5012655 (1991-05-01), Chatterton
patent: 5200045 (1993-04-01), Warren et al.
patent: 5275710 (1994-01-01), Gombocz et al.

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